Lubricator



F. HOGG LUBRIGATOR Oct. 23, 1934.

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Filed Nov. 15, 1931 INVENTOR.

@anale Mgg Mm ATTORNEY.

Patented Oct. 23, 1934 LUBRICATOR Francis Hogg, Wesleyville, Pa., assgnor to The Standard Stoker Company, Incorporated, a cor'- poration of Delaware YApplication November 13, 1931, Serial No. 574,779

8 Claims.

This inventionrelates to lubricators for use in connection withengines and is ,adapted to deliver a lubricant -toI the cylinders thereof through a pressure fluid lead; its main object being to provide a device of this kind which is especially adapted for usewith engines operated periodical- 1y, anengine typical of this form being shown in United States Letters Patent No. 1,747,899 issued yto me February 10,1930. i

v 1 y ,Another objectof this invention resides in mev provision of a novel lubricator comprising a main andan auxiliary reservoir, andra valve `which controls the flow of lubricantv from the main reservoir to said auxiliary reservoir, the lubricator being further characterized bya novel relation of pressure fluid ports or passagesand inwhich. relation `the valve of the lubricatorfunctions as a controlmember between the intake and discharge ports of the pressure fluid passage so that lubricant is `positively supplied to the desired point of lubrication by pressure iiuid means.

A further and more specific object o i the invention is the provisionof a lubricator which dis- `charges a lubricant to the cylinder walls of an enginejof the type described, the discharge of the lubricant being in advance of the movement of the piston inthe engine cylinder and prior toits `reciprocatory motion therein, thereby insuring a protectivelm of oilvfor, the engine cylinder walls `at all times. f l

Anlembodiment of the invention is hereinafter described, and is illustrated in the accompany- ,ingldrawing in which` g i Figure lis a diagrammatic sectional View showing anapplication of the invention to an engine `of vthe type described.;l

Figure 2 is a` central' vertical section of the Vlubricator showrrin'V Figure 1 `in its'normal or `closed position; and

i4 Figure 3 is apcentral Vertical section of the lubricator in its lubricant supplying phase.

Referring nowto the-drawing, a periodically operated engine` is` shown at A comprising the cylindery 10,ja piston 11 reciprocable therein, a ported head 12 coveringione end of the cylinder, and a frame member 13 which supports said en- 'gineand-forms a closure forlthe other end of the cylinder. A rod 14 isgsecured to theipiston 11 and transmits the power developed by said engine for performing any suitable operation, such as that shown in my patent heretobefore mentioned.

The piston 11 is actuated preferably by steam which is admitted to the cylinder through the ,portsV 15 and 16iaswi1l presently appear. The .pistonpis normally in3the position shown in Figure 1, the events of this piston being governed by a control valve 17, which when in its uppermost position, admits steam from the main supply lead 18 to the supply lead 19 of the port 15 for. moving thev piston towards the ported head 12, uid in advance of the movement of the piston being exhausted through the port 16, its supply lead and thence to atmosphere through the control valve. In the position shown in Figure l, the control valve 17 will admit steam from the main sup- ,55 ply lead 18 to the supply lead 20 of the port 16 for moving the piston towards the frame member 13, the fluid in advance of the movement of the piston exhausting through the port 15, its supply lead 19 and thence to atmosphere through the ,7.0

control valve. A valve 2l, in the main supply lead 18, is provided for interrupting the ilow of steam ,to `said ncontrol valve.

Intermediate the control valve 17 and the valve 21 there is shown a lubricator, generally indi- 75 Vcated at L, through which steam is passed, there v26 is in its lowermostposition, as shown in Figure 2. The lower portion of the valve' 26 is received by the bore 28"inimediately beneath and in communication with the auxiliary reservoir 24, the 9i upper portion of said bore 28 being provided with a seat 29 which receives a` complementary portion 30 `of the valve 26 for preventing the quantity of oil in the main reservoir 23 from entering the main steam lead 18 except when so desired. It is 95 apparent that the cylindrical portion of the valve 26, immediately beneath the complementary portion 30 must rst move beyond the seat 29 before oil from the auxiliary reservoir 24 will pass into the chamber 31. In the meantime, the cylindrical portion of the valve 26 immediately above the bevelled edge 30 will enter the cylindrical bore 25 and prevent the flow of additional oil into the auxiliary reservoir 24.

` Beneath the lowermost portion of the valve 26 105 is a chamber 31, which receives steam from the main `lead 18 through the pressure fluid intake port 50 when the Valve 21 is opened, for raising the valve 26 against the tension of the spring 32 which normally seats the valve inthe position shown in Figure 2. When the valve 26 is raised, steam will enter the pressure fluid discharge port 33 and then pass through the control valve for operating the piston 11.

In the operation of this device, it will be understood that the piston 11, the control valve 17 and the lubricator valve 26 are in the position shown in Figures 1 and 2, with the valve 21 closed. Whenever it is desired to actuate the piston, the valve 21 is opened, allowing steam to enter the chamber 31 of the main body member 22 causing the valve 26 to raise, thereby preventing further entry of oil from the main reservoir 23 to the auxiliary reservoir 24 and allowing the oil in said auxiliary reservoir 24. to pass through the grooves 34 of the valve 26 into the bore 28. The oil is then carried by the steam to thecontrol valve 17, the oil saturated steam passing through the supply lead 20 and its port 16 intothe cylinder 10, thoroughly lubricating the walls thereof. The control valve 17 is then raised to its uppermost position, allowing steam to enter the supply line 19 for moving the piston towards the ported head 12 along the lubricated walls of the cylinder 10, the steam in advance of the movement of the piston exhausting through the supply lead 20. When the control valve is lowered, the piston returns to the position shown in Figure 1. The valve 21 is then closed, which allows the pressure in the supply leads to diminish, permitting the spring 32 to return the valve 26 to its normal position. In practice, the supply leads are provided with suitable drains which open when the valve 2l is closed, thus allowing the valve 26 to be returned to its normal position almost immediately due to the rapid decrease in pressure in the leads.

The top wall 35 of the lubricator ybody member is threaded to receive a plug 36 for closing the opening 37 through which the valve 26 and the spring 32 are inserted in their proper relation. The plug 36 is provided with a passage 38, so that rair which is displaced by the upward movement of the valve 26 may escape. The upper po-rtion of the valve 26 is provided with a stem 39 which arrests the further upward movement of the valve and also closes the passage 37. The supply of lubricant may be replenished by removing a screw plug 40 in said top wall 35.

While I have shown but one form of my invention, it is susceptible of various changes and modifications substantially as defined in the following claims.y

1. A lubricator having a main body member, a main lubricant reservoir, an auxiliary reservoir, a restricted passage therebetween, a pressure fluid chamber, an opening common to said auxiliary reservoir and said pressure fluid chamber, a seat formed in said body member at the marginal edge of said opening, a valve member having an enlarged cylindrical section, the lower peripheral edge of said cylindrical section being arranged to normally engage said seat, grooves in the upper portion of said cylindrical section normally forming channels with the walls of said restricted passage between said main lubricant reservoir and said auxiliary reservoir, means for supplying uid under pressure to said pressure fluid chamber whereby said valve member is unseated closing the passage between said main lubricant reservoir and said auxiliary reservoir and providing communication between said auxiliary reservoir and said pressure fluid chamber.

2. A lubricator having a main body member, a main lubricant reservoir, an auxiliary reservoir,

a cylindrical bore forming a restricted passage therebetween, a pressure fluid chamber arranged for the passage of pressure fluid therethrough, an opening common to said auxiliary reservoir and said pressure fluid chamber, a seat formed in said body member at the marginal edge of said opening, and a valve member mounted in said main body member, the upper portion of said valve member being in the form of a cylinder provided with grooves which are parallel to the axis of said cylinder, and the lower peripheral edge of said valve member being arranged to engage said seat, the upper portion of said valve member reciprocable in said cylindrical bore for delivering a charge of lubricant from said main reservoir to said auxiliary reservoir and from said auxiliary reservoir into the pressure fluid stream passing through said pressure chamber.

3. In combination with a pressure fluid engine comprising a cylinder, a piston reciprocable therein normally at rest adjacent one end of said cylinder, a lead for supplying pressure fluid to said cylinder between the opposite end thereof andsaid piston, a valve in said lead for controlling the flow of pressure iiuid therethrough, a lubricator in said lead between said cylinder and said valve, said lubricator arranged to deliver a charge of lubricant to the pressure fluid flowing through said lead when said valve is opened, such lubricant saturated pressure fluid being admitted into the cylinder between the aforesaid opposite end thereof and said piston in advance of the initial movement of said piston therein, and means for admitting pressure fluid to said cylinder for moving the piston toward such aforesaid opposite end thereof.

4. In combination, an engine comprising a cylinder and a piston reciprocable therein, a head covering one end of the cylinder and a head for the opposite end of said cylinder, said piston being normally at rest adjacent one of said heads, a lead for supplying pressure fluid for actuating 4said piston, a valve for interrupting the flow of pressure fluid through said lead, a control valve pressure fluid to said cylinder for moving said piston from its normal position adjacent one head toward the other head at the opposite end of the cylinder, said control valve being returned to its normal position for returning the piston to its normal position, and a lubricator in said lead intermediate said control valve and said valve, said lubricator including a main reservoir, an auxiliary reservoir, and means for admitting a lubricant from said main reservoir to said auxiliary reservoir when said valve is interrupting the flow of pressure fluid through said lead, said means arranged to deliver the charge of lubricant in said auxiliary reservoir to said lead when said valve is opened whereby the lubricant-saturated pressure fluid may be admitted through the control valve into said cylinder between the second named head and said piston in advance of the initial movement of the piston therein when said control valve is in its normal position.

5. A lubricator comprising a main body member having a main lubricant reservoir therein, an auxiliary reservoir arranged to communicate with said main reservoir for receiving a charge of lubricant therefrom, a pressure fluid intake port and a pressure fluid discharge port, a cylindrical bore in said main body member connecting said intake and discharge ports and communicating with said auxiliary reservoir, and a valve reciprocably mounted in said cylindrical bore, said valve in one extreme position admitting lubricant from said main reservoir to said auxiliary reservoir, restraining llow of pressure liuid from said intake port to said discharge port and closing communication between said auxiliary reservoir and said cylindrical bore, said valve in its other extreme position permitting unrestricted flow of pressure fluid from said intake port to said discharge port, restraining the iiow of lubricant from said main reservoir to said auxiliary reservoir, and opening communication between said auxiliary reservoir and said cylindrical bore.

6. A lubricator comprising a main body member having a main lubricant reservoir therein, an auxiliary reservoir, a cylindrical bore connecting said reservoirs, a pressure fluid intake port and a presure fluid discharge port, a cylindrical bore in said main body member connecting said intake and discharge ports and communicating with said auxiliary reservoir, and a valve reciprocably mounted in the named cylindrical bores, said Valve in one extreme position admitting lubricant from said main reservoir to said auxiliary reservoir through the first named cylindrical bore, restraining flow of pressure fluid from said intake port to said discharge port, and closing communication between said auxiliary reservoir and the second named cylindrical bore, said valve in its other extreme position permitting unrestricted flow of pressure fluid from said intake port to said discharge port, restraining the flow of lubricant from said main reservoir to said auxiliary reservoir, and opening communication between said auxiliary reservoir and the second named cylindri-l cal bore.

7. A lubricator comprising a main body member having a main lubricant reservoir therein, an auxiliary reservoir arranged to communicate with said main reservoir for receiving a charge of lubricant therefrom, a pressure fluid intake port and a pressure fluid discharge port, a cylindrical bore in said main body member connecting said intake and discharge ports and communicating with said auxiliary reservoir, a pressure responsive valve reciprocably mounted in said cylindrical bore between said intake and exhaust ports for controlling the llow of pressure fluid therebetween said Valve admitting lubricant from said main reservoir to said auxiliary reservoir and closing communication between said auxiliary reservoirs and said cylindrical bore when the pressure on said valve is below a predetermined point, said Valve, when 'the pressure therein is above the said predetermined point, permitting unrestricted flow of pressure fluid from said intake port to said discharge port, restraining the flow of lubricant from said main reservoir to said auxiliary reservoir, and opening communication between said auxiliary reservoir and said cylindrical bore for admitting a charge of lubricant to the pressure fluid stream flowing from said intake port to said discharge port.

8. A lubricator comprising a main body member having a main lubricant reservoir therein, an auxiliary reservoir in communication with said main reservoir, a pressure fluid passage in communication with said auxiliary reservoir including a pressure fluid intake port and a pressure fluid discharge port, and a valve interposed between said reservoirs arranged to control the flow of lubricant therebetween and for controlling the flow of pressure fluid through said pressure fluid passage, said valve in one extreme position admitting lubricant from said main reservoir to said auxiliary reservoir, restraining flow of pressure fluid through said passage and closing communication between said pressure fluid passage and said auxiliary reservoir, said valve in its other extreme position restraining flo-w of lubricant from said main reservoir to said auxiliary reservoir, admitting the charge of lubricantin said auxiliary reservoir to said pressure fluid passage and permitting unrestricted flow of pressure fluid from said intake port to said discharge port through said passage.

FRANCIS I-IOGG. 

